Sprinkler-head



(No Model.)

J. H. DIXON. SPRINKLER HEAD.

No. 525,946. Patented Sept. 11, 1894.

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WITNESSES:

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UNITED STATES PATENT OFFICE.

JOHN H. DIXON, OF MARIETTA, OHIO.

SPRINKLER-HEAD.

SPECIFICATION forming part of Letters Patent NO. 525,946,dated September11, 1894.

Application filed March 20, 1894. Serial No. 504.392. (No model.)

To all whom it may concern.-

Be it known that I, JOHN H. DIXON, of Marietta, in the county ofWashington and State of Ohio, have invented a new and ImprovedSprinkler-Head, of which the following is a full, clear, and exactdescription.

My invention relates to improvements in that class of sprinkler headswhich are used in connection with automatic fire extinguisher systemsand which are operated when the heat rises above a certain temperature,so as to open a valve and permit water to flow through and sprinkle overadjacent points so as to extinguish the fire.

The object of my invention is to produce a very simple sprinkler head ofthis class which has fusible parts, but which has these parts arrangedin such a way that they do not either directly or indirectly affect thesealing of the sprinkler head, which has an automatic valve arranged tonormally close the sprinkler head, which has the valve supported in sucha way that the water pressure in it forces it open when the fusiblestops hereinafter described are softened, and which has the valveconstructed so that it forms an excellent deflector and throws the waterevenly around all sides of the sprinkler head.

To these ends my invention consists of certain features of constructionand combinations of parts, which will be hereinafter described andclaimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a side elevation of the sprinkler head embodying myinvention, with the valve closed. Fig. 2 is a front elevation, partly insection, of the same. Fig. 3 is a central longitudinal section with thevalve open. Fig. 4 is a slightly modified form of the sprinkler head,with the valve open and arranged above the head; and Fig. 5 is aplanview of a modified form of the sprinkler head and of the valve releasingmechanism.

The sprinkler head has a rectangular body portion 10, although it may beof other shapes, if desired, which is formed on a pipe 11 this beingfiat ended and having one end screwthreaded, as shown at 12, to enableit to be conveniently coupled'to a water supply pipe.

The other end of the pipe is adapted to be closed by a flat valve 13which also serves as a deflector when it is open and which has anupturned side flange 14 provided with a serrated edge 1 5 through theserrations of WhlCll the water issues in numerous jets when the valve isopen, as hereinafter described. The valve is provided, on its upperside, with a packing 16 to enable it to fit water tight against thepipe. The valve 13 IS supported on the threaded rods 17 which togetherserve as a hanger, and which project downward through the valve, beingheld thereto by nuts 18, which are arranged beneath the valve and bywhich the valve may be adjusted so as to cause it to bear with therequisite tension on the open end of the pipe 11. The upper ends of therods 17 are pivoted, as shown at 20, to the swinging arms 21 which arepivoted to the body 10 on opposite sides, as shown at 22, and the freeends of which are adapted to rest against the fusible stops 23 on thebody 10. The pivots 22 and 20 and the stops 23 are arranged so that thepivots 20 are off the center, and hence if the stops 23 soften under theinfluence of heat, the water pressure on the valve causes it to pulldown on the rods 17 and these, acting on the arms 21, cause them to cutoff the stop 23 and this lets the arms swing down into the positionshown in Flg. 3, with the valve 13 held immediately below the pipe 11,and the water which issues from the pipe strikes on the valve and isdeflected on all sides through the serrations 15, thus thoroughlysprinkling all surrounding ob ects.

It will be seen that the device is of great simplicity and that, in casethe temperature rises so as to soften the stops 23, it is sure tooperate. In some cases it may be, des1rable to have the valve 13 abovethe pipe 11, 1n which case the sprinkler head is simply turned it isintended to use the sprinkler head in this way it is desirable to have aguide pin 24: on the valve, which pin projects into the plpe 11, andwhen the valve is raised by the water pressure, the pin 24 prevents thevalve from perfectly serve its function as a deflector.

In Fig. 5 I have shown a modified form of the device which may be usedas an automatic sprinkler head or a manually operated one,

bottom side up, as shown in Fig. 4, and when swinging to one side andthus causes it to I00 and in this case I use a tilting lever 25 which isforked and is fulcrumed, near the center, as shown at 26, the ends ofits members terminating in fusible stops 27 against which the arms 21abut, and it will be seen that in case the stops are fused, the armsswing down in the manner already described and permit the outflow ofwater. The lever 25 has a nonfusible cord 28 at its free end, which runsover a suitable guide pulley 29 and may be carried to any desiredquarter, and if it is desired to release the valve and open thesprinkler head, it may be done by pulling on the cord so as to tilt thelever 25 and throw the stops 27 out of the way of the arms 21.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. A sprinkler head, comprising a pipe, a valve hungthereon and adapted to close one end of the pipe, an extensible hangerto hold the valve to the pipe, and fusible stops in the path of onemember or section of the hanger and against which said part rests toprevent the elongation of the hanger, substantiallyas 25 described.

2. A sprinkler head, comprising a pipe, a pair of arms pivoted thereon,fusible stops extending into the paths of the arms, and a valvesuspended from the arms and adapted 0 fusible stops extending into thepaths of the 5 arms, hanger rods pivoted on. the arms, and a flat valvecarried by the hanger rods and adapted to close against the end of thepipe, substantially as described.

JOHN II. DIXON.

Witnesses:

D. S. MILNE, LoUIs SHILLING.

